I just tried to go through this yesterday and also got stuck in the redirect loop.
Is the tutorial up to date, or is there a finished version that is up to date that is available for comparison?
Hi @Bahai-Books, thank you for your screenshot and detailed description of the bug you've encountered. After some investigation, it looks like there was indeed a bug with app links where the host parameter might be missing during auth. One of the fixes has gone in, and we are currently getting the last of the fix in place.